Stanley survey sextant
Survey or sounding quintant number '20' by Stanley London.
Product details: Stanley survey sextant | Stanley London | Quintant | Survey | Material: Brass
Small surveying vernier quintant made in brass with a brass scale. The instrument has the traditional octant frame model but is designed as a survey instrument with a 160 degree scale and no filters. The instrument is missing the telescope but came with a pinhole disc that however does not fit the ring. What is interesting is the method of adjusting index error which rotates the entire mirror, a method seen on more earlier instruments in my collection. The instrument is undated but probably from somewhere late 19th century or perhaps early 20th.
stanley survey
Data sheet
- Type of use
- Survey
- Material
- Brass
- graduation
- deg
- measuring range
- 130
- Radius limb in mm
- 130
- accuracy
- 10"
- fine reading
- vernier (single)
- Size instrument (l x w x h) in m
- 0.18 x 0.20 x 0.12
- weight instrument in kg
- 1.1
- Size case (l x w x h) in m
- 0.21 x 0.22 x 0.13
- weight case & in kg
- 1.4
- country obtained from
- United Kingdom
You might also like
8 other products in the same category:
Survey or sounding quintant number '20' by Stanley London.
Product details: Stanley survey sextant | Stanley London | Quintant | Survey | Material: Brass